what is an analogy for the retina
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What is Macular Degeneration? Basic Retina Anatomy Retina Anatomy. A basic overview of retina anatomy will help you better understand why and how this eye disease affects one’s vision. The best analogy for understanding how the eye works is to compare the eye to a camera. It is the back of the eyeball, the retina, that acts like film in a camera.The retina is a very thin layer of tissue lining the inside of the eye.he macula is a small spot, about the size of a pencil eraser, located in the center of the retina. This part of the retina is responsible for detailed, sharp, clear vision. A healthy macula is what gives a person 20/20 vision.
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- Noun. 1. retina-the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve. neuroepithelium-epithelium associated with special sense organs and containing sensory nerve endings. eye, oculus, optic-the organ of sight.
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Health Physics Technician: Job Description, Duties and Requirements Health physics technicians, also known as occupational health and safety technicians, ensure workplace safety in industries that use radioactive materials or expose people to radioactivity.
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Inflammation of the retina Research the causes of these symptoms that are similar to, or related to, the symptom Inflammation of the retina: 1  Behcet's syndrome (2 causes) 2  Candidiasis. 3  Cytomegalovirus retinitis. 4  Cytoplasmic pneumonia. 5  Eales disease. 6  Hemoglobin S/ C disease. 7  Hypertension (398 causes) 8  more symptoms...».
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- Just like a metaphor and a simile, an analogy is used to demonstrate how two seemingly different things are actually quite similar. However, the analogy isn’t a figure of speech, like the other two; it’s an elaborate, rational argument.
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- Located between vessels of the choriocapillaris and light-sensitive outer segments of the photoreceptors, the retinal pigment epithelium (RPE) closely interacts with photoreceptors in the maintenance of visual function.uthor information: (1)Bereich Experimentelle Ophthalmologie, Klinik und Poliklinik fuer Augenheilkunde, Universitaetsklinikum Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany. o.strauss@uke.uni-hamburg.de.
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- Analogy: A kind of extended metaphor or long simile in which an explicit comparison is made between two things (events, ideas, people, etc.) for the purpose of furthering a line of reasoning or drawing an inference; a form of reasoning employing comparative or parallel cases.
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Simple Anatomy of the Retina When an ophthalmologist uses an ophthalmoscope to look into your eye he sees the following view of the retina (Fig. 1). In the center of the retina is the optic nerve, a circular to oval white area measuring about 2 x 1.5 mm across.
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The Wonder of Accommodation The eye typically rotates in its socket in order to focus images of objects at this location. The distance from the outer surface of the cornea (where the light undergoes most of its refraction) to the central portion of the fovea on the retina is approximately 2.4 cm. Light entering the cornea must produce an image with a distance of 2.4 cm from its outer edge.
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Analogy Analogy (from Greek ἀναλογία, analogia, proportion) is a cognitive process of transferring information or meaning from a particular subject (the analogue or source) to another (the target), or a linguistic expression corresponding to such a process.he word analogy can also refer to the relation between the source and the target themselves, which is often, though not necessarily, a similarity, as in the biological notion of analogy. Rutherford's model of the atom (modified by Niels Bohr) made an analogy between the atom and the solar system.
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Retinal Implant Nano Retina’s ingenious solution includes all the necessary functionality of a retinal prosthesis on one tiny implant, i.e. image reception and transformation to neural stimulation with the required energy and control utilities, and has a footprint 100 times smaller than alternatives.
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What is the cornea? The refractive process the eye uses is similar to the way a camera takes a picture. The cornea and lens in the eye act as the camera lens. The retina is like the film (in older cameras), or the image sensor (in digital cameras). If the image is not focused properly, the retina makes a blurry image. The cornea also serves as a filter that screens out damaging ultraviolet (UV) light from the sun.
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correspondence anomalous retinal correspondence a condition in which disparate points on the retinas of the two eyes come to be associated sensorially. normal retinal correspondence the condition in which the corresponding points on the retinas of the two eyes are associated sensorially. retinal correspondence the state concerned with the impingement of image-producing stimuli on the retinas of the two eyes.
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- Pigment epithelium-Mouse. The retinal pigment epithelium (RPE) is the pigmented cell layer located just outside the retina and is attached to what is called the choroid, a layer filled with blood vessels that nourish the retina. The RPE closely interacts with photoreceptors in the maintenance of visual function.The RPE is composed of a single layer of hexagonal cells that are densely packed with granules of melanin that absorbs the light energy that arrive to the retina.he RPE closely interacts with photoreceptors in the maintenance of visual function. The RPE is composed of a single layer of hexagonal cells that are densely packed with granules of melanin that absorbs the light energy that arrive to the retina.
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- Retina. The lining of the back of eye containing two types of photoreceptor cells-rods-sensitive to dim light and black and white-and cones-sensitive to colour. A small area called the fovea in the middle of the retina has many more cones than rods.
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MOV-to-AVI lossless conversion? I hear that the MOV files created by the Olympus C5060 are actually Motion JPEG within a MOV container. The questions is, how can I get rid of this commonly-considered-evil* QuickTime and convert the file to a more widely used container such as AVI? Note that I don't want to lose any quality.
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How to Choose the Right Sunglasses High intensity visible light (such as staring directly at the sun for 10 minutes) damages the retina, causing a disease called solar retinopathy. In laboratory mice, bright light, especially blue, causes retinal damage. Therefore, it is likely that repeated exposure to bright visible light is damaging to the retina and may be a risk factor for age-related macular degeneration (AMD) and other retinal diseases.
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Analogy Some common analogy examples are given below: 1  Life is like a race. The one who keeps running wins the race and the one who stops to catch a breath loses. 2  Just as a sword is the weapon of a warrior, a pen is the weapon of a writer. 3  How a doctor diagnoses diseases is like how a detective investigates crimes.
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Neuroesthetics Visual metaphors. Ramachandran defines a metaphor as a mental tunnel between two concepts that appear grossly dissimilar on the surface, but instead share a deeper connection. Similar to the effects of perceptual problem solving, grasping an analogy is rewarding. It enables the viewer to highlight crucial aspects that the two objects share.
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Anatomy of the Eye Sight, like the other senses is closely related to other parts of our anatomy. The eye is connected to the brain and dependent upon the brain to interpret what we see. How we see depends upon the transfer of light. Light passes through the front of the eye (cornea) to the lens. The cornea and the lens help to focus the light rays onto the back of the eye (retina). The cells in the retina absorb and convert the light to electrochemical impulses which are transferred along the optic nerve and then to the brain.
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Retinal pigment epithelium From Wikipedia, the free encyclopedia. The pigmented layer of retina or retinal pigment epithelium (RPE) is the pigmented cell layer just outside the neurosensory retina that nourishes retinal visual cells, and is firmly attached to the underlying choroid and overlying retinal visual cells.Contents.n the eyes of albinos, the cells of this layer contain no pigment. Dysfunction of the RPE is found in Age-Related Macular Degeneration and Retinitis Pigmentosa. RPE are also involved in Diabetic retinopathy.
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Analogy Examples Analogy also spices up the sentence preventing it from getting monotonous. That is why analogy has been extensively used in rhetoric. Go through the various examples given below to have a better perception of analogy. Examples Of Analogy. 1  A gang of boys is like a pack of wolves. 2  Obeying is to a servant, like ordering is to a master. 3  Green is to go as red is to stop.
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Analogy In a narrower sense, analogy is an inference or an argument from one particular to another particular, as opposed to deduction, induction, and abduction, where at least one of the premises or the conclusion is general.he word analogy can also refer to the relation between the source and the target themselves, which is often, though not necessarily, a similarity, as in the biological notion of analogy. Rutherford's model of the atom (modified by Niels Bohr) made an analogy between the atom and the solar system.
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Simple Anatomy of the Retina by Helga Kolb CLICK HERE to see an animation (from the iris to the retina) (Quicktime movie). A circular field of approximately 6 mm around the fovea is considered the central retina while beyond this is peripheral retina stretching to the ora serrata, 21 mm from the center of the retina (fovea).The total retina is a circular disc of between 30 and 40 mm in diameter (Polyak, 1941; Van Buren, 1963; Kolb, 1991).hen an ophthalmologist uses an ophthalmoscope to look into your eye he sees the following view of the retina (Fig. 1). In the center of the retina is the optic nerve, a circular to oval white area measuring about 2 x 1.5 mm across.
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Central retinal artery The fovea and a small area surrounding it are not supplied by the central retinal artery or its branches, but instead by the choroid. The central retinal artery is approximately 160 micrometres in diameter. Variation. In some cases - approximately 20% of the population - there is a branch of the ciliary circulation called the cilio-retinal artery which supplies the retina between the macula and the optic nerve, including the nerve fibers from the foveal photoreceptors.
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The Eye Discuss the role of the retina, lens and optic nerve. Light enter your eye and is refracted in the cornea. Then the lens directs the light to the retina. Then the light energy causes the rods and cones to produce impulses, which are them sent to the optic nerve.